Popsugar Fitness Workouts Best Stretches For Marathon Training Injury Prevention Workout For Runners August 28, 2018 by Anna Renderer View On One Page Photo 1 of 8 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Lying Knee Tucks Lying on your back, hug one knee into your chest while fully extending the other leg, hovering it above the ground. Keep your focus on lengthening your leg away from your body while simultaneously squeezing your knee to your chest. Hold for 2-3 seconds then alternate legs, complete 10 reps. Previous Next Start Slideshow WorkoutsRunningMarathon TrainingStretchesMarathonsInjury Prevention